[CMake] CPack RPM: why not <name>-<version>-<release>-<arch>.rpm filename?

[Winfried Dobbe]

When I build a RPM with current CVS CMAKE/CPack for project
<projectname>
the file name of the generated rpm is:
<projectname>-<version>-Linux.rpm

The common filename for an rpm is
<projectname>-<version>-<release>-<architecture>.rpm

Putting "Linux" in the file name doesn't provide much information
because
I don't know any other OS that uses the RPM package system.

When I look in the CPackRPM.cmake module I see that the following line
is
commented out:

#SET(CPACK_RPM_FILE_NAME
"${CPACK_RPM_PACKAGE_NAME}-${CPACK_RPM_PACKAGE_VERSION}-$
{CPACK_RPM_PACKAGE_RELEASE}-${CPACK_RPM_PACKAGE_ARCHITECTURE}.rpm")
and replaced by:
SET(CPACK_RPM_FILE_NAME "${CPACK_OUTPUT_FILE_NAME}")

When I set the following variable in my CMakeLists.txt:
set(CPACK_OUTPUT_FILE_NAME
"${CMAKE_PROJECT_NAME}-${CPACK_PACKAGE_VERSION_MAJOR}.$
{CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH}-$
{CPACK_RPM_PACKAGE_RELEASE}-${CPACK_RPM_PACKAGE_ARCHITECTURE}.rpm")

the rpm is generated with the filename that I expect in directory
_CPack_Packages/Linux/RPM, but after that I get the error:
CPack Error: Problem copying the package:
/home/wdobbe/checkout/btbuild/_CPack_Packages/Linux/RPM/
buildtools-1.0.0-Linux.rpm
to /home/wdobbe/checkout/btbuild/buildtools-1.0.0-Linux.rpm
CPack Error: Error when generating package: buildtools
make: *** [package] Error 1

So even though I set the rpm output file name, CPack still looks for the
"default" file name.

Can somebody (Eric?) clarify this behaviour?

thanks in advance,
Winfried

[Eric Noulard]

When I build a RPM with current CVS CMAKE/CPack for project <projectname>
<projectname>-<version>-Linux.rpm
The common filename for an rpm is
<projectname>-<version>-<release>-<architecture>.rpm
Putting "Linux" in the file name doesn't provide much information because
I don't know any other OS that uses the RPM package system.
When I look in the CPackRPM.cmake module I see that the following line is
#SET(CPACK_RPM_FILE_NAME
"${CPACK_RPM_PACKAGE_NAME}-${CPACK_RPM_PACKAGE_VERSION}-${CPACK_RPM_PACKAGE_RELEASE}-${CPACK_RPM_PACKAGE_ARCHITECTURE}.rpm")
SET(CPACK_RPM_FILE_NAME "${CPACK_OUTPUT_FILE_NAME}")
set(CPACK_OUTPUT_FILE_NAME
"${CMAKE_PROJECT_NAME}-${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH}-${CPACK_RPM_PACKAGE_RELEASE}-${CPACK_RPM_PACKAGE_ARCHITECTURE}.rpm")
the rpm is generated with the filename that I expect in directory
/home/wdobbe/checkout/btbuild/_CPack_Packages/Linux/RPM/buildtools-1.0.0-Linux.rpm
to /home/wdobbe/checkout/btbuild/buildtools-1.0.0-Linux.rpm
CPack Error: Error when generating package: buildtools
make: *** [package] Error 1
So even though I set the rpm output file name, CPack still looks for the
"default" file name.
Can somebody (Eric?) clarify this behaviour?

...

Yes this is currently a "design" problem in the CPack Generic generator,
currently a specific generator may not decide the name of the
generated (package) filename.
The name is given to him by the upper level CPack Generic Generator.
This cause another problem for supporting Component Install with RPM:
http://public.kitware.com/Bug/view.php?id=7645

I did file a bug on this particular topic
http://public.kitware.com/Bug/view.php?id=9900
but I did not start anything for now :-(

Do you want to contribute?